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I'm GMT-5. 7 PM on Thursday (which is 2 pm for me) would be excellent. If that time in particular doesn't work, almost anything within the range you mentioned on Thursday would be great.
My weekends are usually busier than my weekdays, but if something goes terribly wrong I could probably play some time around 9-10 pm your time on Saturday. The Friday time would be better for me than Saturday, though, if something goes wrong with Thursday.